jack: (Default)
[personal profile] jack
I have often had a conversaion something like:

A: Oh, look, this product apparently contains "chemicals".
B: What do they fear people would think it was made out of? Plamsa? Neutronium?

Which is very funny. But I feel compelled to admit that "chemical" is pretty clear in this context.

"Rectangle" means "right-angled quadrilateral" but it ALSO means "right-angled quadrilateral, usually not a square." In a mathematical proof, where each line needs to be unambiguous, you would have to say "non-square rectangle" if that's what you meant. But in normal conversation -- even about maths -- "rectangle" can and should include or exclude square based on context.

Similarly, people use "chemical" to mean "chemical, usually one that doesn't have a more specific description". Which in turn often means "artificially produced", because naturally occurring chemicals are more likely to have colloquial or specific names (either because they've been known for a long time, or are complicated).

This is _indicative_ of people thinking "oh, natural is better" which can become dangerously dogmatized, but I think it's perfectly _clear_.

The above conversation is _funny_, but only some of the time is it an accurate criticism.

Date: 2010-03-01 02:00 pm (UTC)
pseudomonas: per bend sinister azure and or a chameleon counterchanged (Default)
From: [personal profile] pseudomonas
Thing is, the two uses of "rectangle" are actually distinct, whereas the whole "naturally-occurring" / "synthetic" distinction is very blurry indeed.

Date: 2010-03-01 02:22 pm (UTC)
ptc24: (Default)
From: [personal profile] ptc24
Oh, my accidentally anonymous comment got screened. Anyway, here it is:

Just because a distinction is blurry, doesn't mean it isn't useful or important.